-Benzyl protecting groups as hydrogen donors in catalytic transfer hydrogenolysis. Selective debenzylation of 1,6-anhydro hexoses.
作者:M del Carmen Cruzado、Manuel Martín-Lomas
DOI:10.1016/s0040-4039(00)84567-0
日期:1986.1
-Benzyl protecting groups may act as hydrogen donors in heterogeneouscatalytictransferhydrogenolysis. Hydrogenolysis of compounds - demonstrated that this hydrogen transfer occurs when adjacent -disposed benzylated hydroxyl groups are present.
Synthesis and characterization of methyl 6-O-β-d-galactopyranosyl-β-d-galactopyranoside and methyl O-β-d-galactopyranosyl-(1→6)-O-β-d-galactopyranosyl-(1→6)-β-d-galactopyranoside
作者:Vinai K. Srivastava、Susan J. Sondheimer、Conrad Schuerch
DOI:10.1016/s0008-6215(00)85899-1
日期:1980.11
O -benzyl-β- d -galactopyranoside ( 10 ). Compound 10 was O -deacetylated with ammonium hydroxide in methanol to give 11 . Reaction of 9 with 11 under the same conditions of glycosidation gave the corresponding disaccharide derivative 12 . O -Deacetylation of 12 followed by glycosidation with 9 gave the corresponding trisaccharide derivative 16 . Appropriate deblocking sequences gave the title compounds